class EventsFinder attr_reader :source, :params, :current_user # Used to filter Events # # Arguments: # source - which user or project to looks for events on # current_user - only return events for projects visible to this user # params: # action: string # target_type: string # before: datetime # after: datetime # def initialize(params = {}) @source = params.delete(:source) @current_user = params.delete(:current_user) @params = params end def execute events = source.events events = by_current_user_access(events) events = by_action(events) events = by_target_type(events) events = by_created_at_before(events) events = by_created_at_after(events) events end private def by_current_user_access(events) events.merge(ProjectsFinder.new(current_user: current_user).execute). joins(:project) end def by_action(events) return events unless Event::ACTIONS[params[:action]] events.where(action: Event::ACTIONS[params[:action]]) end def by_target_type(events) return events unless Event::TARGET_TYPES[params[:target_type]] events.where(target_type: Event::TARGET_TYPES[params[:target_type]]) end def by_created_at_before(events) return events unless params[:before] events.where('events.created_at < ?', params[:before].beginning_of_day) end def by_created_at_after(events) return events unless params[:after] events.where('events.created_at > ?', params[:after].end_of_day) end end